PIWI-interacting RNAs (piRNAs) protect the germ line by targeting transposable elements (TEs) through the base-pair complementarity. We do not know how piRNAs co-evolve with TEs in chickens. Here we reported that all active TEs in the chicken germ line are targeted by piRNAs. and as TEs lose their activity. https://countryscenesaddleryandpetsuppliers.shop/product-category/leather-accented-felt-pads/